Automatic control system for electric railways.



B. F. HUTGHBS, JHK. AUTOMATIC CONTROL SYSTEM POR ELECTRIC RAILWAYS.

f 4 APPLoATIoNHLBDrEBJ,1912.

OH/VEY plnralitycfswitclies althuglr it may alsov Togli whom e mfg-ylmem.'-

.a specicatioii,

UNITED STATES PATENT ernten'.

SENJAMIN. -H-UTclins, Jin., ornnnENiJALE, N'EWJERSEY.

.Je .it kwh mmm @d 'Siete 0f; New ,Je have ,invented en IilflprovedyAnimati@ @rit-rol System .for Elearie lRe i'i 1,v etys @if bien .thefuowin'g is This '1 1 entree @if 1z0 a :n@v1 .zsysfem fercontrcllingelect 1ly prcpelled cars and trains in Such a' Iinertliatcollisins are eiectiyely preventedjvithont the use of any signal erOther add4 ional Wires,

'filesystem is merePi't-iciilarlydsend' te protect single trackfrailwayshaving a be readily adptedtq ether purposes.-

j The syster1i1 lis that if a ca`,r hasA arriyed una switch and thereisno clear track ahead, the electric current is autxriatically cut offfrom the switch until said track has been cleared.

In theaecompanying drawing: Figure 1 is a diagram` shwingrmyimprcvedautomatic control system applied to ,a trackseeton having three'switches; Fig. 2 is a diagram f nevof the circuit changersgFig. 3 asimilar View thereof, shwing the parts in a differentfpostin, andFig.4 la diagram showing the additional resistance contained in the cars, 4

The track is shown to comprise the single track sections 10, 11, 12,V 13which are, conrled by Switcher. 14,15, 16 respectively, the rails of allsections gbeing' conductiyely connected vin suitable. -xnfar'iner. Tlecorre,-v

spndingly arranged trlley Wire or third i rail cc-rnprisesthesinglesections 17, 18,v 19,

and the dcilble r twintsecticns, 21, 2 2, 2 3, thesingle sectiensbeinginsulated freni the dcnble sections as at 211.4 The insulatingpoints are arranged Within the duble Wire sections in close proximity totheir ccnneeting points with the single Wiresecticns, s that. eachsingle wireterminatesin a 4foi'rk asclearlylliiSild I Fig.-` 1 At elhfthe s witche sf .there ,is arranged a` circuit changer Whh ,lOntrols theadmissicn `of electric current inte ,the trqlleywires ci theJ` wire 23Whileasuitable seni-ce lef electricity 29 is by wires 30, lconected toAtrack'section 10 and feed wire 28 respectively.

siiiiietii f ttiersfratent. ajiiii'eaii tied February 7, 1ere. Serri-l1ro. :676,003.

atente Dee'eaieie.

,is lieten .the elecfmgnes,

mary Winding of electromagnet 33 is by Wire 45 connected toA acontact 46'andby Wire 47 to thebifurcatedend ofthe single trolley Wireleading-toward the left, say to wire 18. the 'primary windings 48, 499ilectioiiie'gnts 34, ,35 which are GQ111- nected in parallel, a wire 50leads to both trolley Wires of the switchgsay t0 Wires 15, While a Wirelcennects said windings with a, sentirci-pim O'rgfbridge 52 mounted 0narmature 3 6 and inslated therefrqi: as at ing the dr wiringfrcmlbei'ngpbscnred by Showing lsiltill between armftl. ,3Q-arid Wire51. Wlienyarmatulref is t0- ward the left. (Fig. 2), 1t condnctiyelyconllectsthe contacts 42, 46, while when it is swung toward the ri'git(I-"ig-` 3) it @Onduf tively connects dpairgof contacts 54,` 55.

cette?, @new is, wife or come@ 4 56 connectedtcfwire Sand Contact 55 isby wir@ 5,7 @Generated te Mini-,47, A11E4 ef the primary windings "andwires or Jc onducters above l mentioned b e, o f dimen- LSihS as@readily Permlt the? Passage f the electric Gliirntnecessiary feroperatingthe carsr trains that 4pass the track section high resistancewinding, yelectroinag'net 32 being provided with a secondary winding 58,one end of which is connected to wire 43, while its other end is by wire59 connected to a conductor 60 that connects armature 38 and spring 39with armature 36. The secondary Winding 61 is with one end connected Atowire 47 while its other end is by wire 62 connected to conductor 60. Thesecondary windings 63, 64 of electromagnets 34, 35 are connected inseries, the freev end of winding 63 being connected to wire 50, whilethe free end of winding 64 is by wire 65 connected to a contact 66adapted to be engaged by armature 38 when electromagnets 32, 33 aredenergized.

Before explaining the various circuits in detail, it may be stated ingeneral elucidation of the device that when a car travels along a singletrack section of the line, current is supplied to the correspondingtrolleywire section through the circuit' changers arranged at thetrackswitches that Hank said single track section. So for instance if acar 67 travels along track section 12 in the direction of arrow a (Fig.l), the armatures 36 of circuit changers A2 A3 are swung toward the left(by reasons hereinafter more fully explained). Part ofthe currentnecessary for operating car 67 flows from feed wire 28 through branch26, armature 36 of circuit changer A2, contact 42, wire-11, winding 40of electromagnet 32 and wire 43 to trolley wire 19, while the other partof the current is supplied to wire 19 through branch 27, armature 36 ofcircuit changer As, contact- 46, wire 45, winding 44 ofelectromagnetr33, and wire 47 all of circuit changer A3. In order tomaintain the armatures 36 in their proper positions, even if thecontroller 68 of the car is turned to out ofi the motor current, anadditional comparativelyhigh resistance 69 is interpolated between theconductors 70, 71 leading from the controller tothe wheels and trolleyrespectively. -In this way a small current will continuously flowthrough electromaguets 32, 33 of. circuit changers A2 A1 respectively,as long as a car passes track section 12, so that the position of thearmatures 36 is rendered independent of the position of the controllerhandle.

Fig. 1 further shows a car 72 passing switch 14 in the direction ofarrow b. This car is free ,to4 proceed and meet car 67 in switch 15 andreceives its operative current,I

from the circuit changers of the switch 15 and of the switch located tothe left of switch 14, the last named switch being not shownin thedrawing.v Part of the current for operating car 72 flows from branch 26through the armature 36`of circuit changer A1, contact 46, wire 45,Winding 44, wire 47,

trolley wire 18,v wire 43 'of circuit changer A1, wire 56, Contact 54,bridge 52 of the armature 36 lof circuit changer A1 which is thus freeto proceed from switch 14 toward n switch 15. As soon -as the trolley 73of car 72 leaves wire 21, the current which previously fiowed fromcontacts 54, 55 of circuit changer A1 through bridge 52, wire A51,`windings 48', 49 and wire 50 is interrupted, so that electromagnets 34,35 become denergized and their armature 36 is liberated. Then trolley 73 engages wire 18 a current will flow from feed wire 28 through branch25, conduit 60 of circuit changer A1, wire 59, winding 58 ofelectromagnet` 32, wire v 43 to trolley wire18, so that electromagnet 32is energized to attract armature 36 of circuit changer A1. Thus 'a'motor circuit is established for car 72, the current iowing throughbranch 25, armature 36 of circuit changer A1, contact 42, wire 41,winding 40 of electromagnet 32, and wire 43 to trolley wire 18. As nowthe armatures 36 of bot-h circuit changers A1 and A1 are swung towardthe left, current will be supplied to trolley wire 18 from both of saidcircuit changers as above described, so that f -car 72 is free toproceed toward switch l5.

Since car 67 is located closer to switch 15 than car 72, car 67 willreach said switch earlier than car 72. As soon as the car 67 enters withits trolley- 74 the trolley wire 22, the current supply toits motorisdiscontinued, so that it cannot proceed until car 72 has also reachedthe switch, `where upon current is automatically supplied to trolleywire 22, so that both cars may proceed. It is obvious from Fig. 1 thatwhen car 67 has reached switch 15, while car 72 appreaches the latter ontrack 11, the armature 36 of circuit closer A2 will remaln swung towardthe left owing to the current' not be swung toward contacts S54, 55 sothat no current can be supplied to trolley wires 22 and car 67 is thusunable to proceed. As soon as car 72 also enters Aswitch 15, thearmature 36 of circuit changer A2 will be swung'toward the right forthefollowing reason: As car 72 leaves the track 11 and trolley wire 18,the flow of current through electromagnet 33 will be interrupted so thatboth armatures 36 and 38 of circuit changer A.2 are released therefrom.Armature 38 willthus engage Contact Gttlierebyclosin'g' a circuit, thecurrent otwlich tlowsgroin feedl -wi-'reQS through branch `26",conductor 6o, of circuit .Changer A2, springt 39, armeture 38, contacto@wire 65, winding4 64, 63 of `electroniagmts i 35, 34:, wire 50, and'cars 6T, 7 2 to` the track rails. Electromagnets 35,3j are thusenergizedto attract armatare- 36 and thereby throw` bridge 52l against ,contacts`54, ofcicitl changer As this positionof the cars, the armaturesy ,36 of.circuit changera` A1, A?" 2 are i swung tof ward the left,cnrrentjyvill thus beisppl'ied to trolley 22r from .both ,said, j,circuit changers in a manner analogousk tic-that des j scribedinconnection with switch-*1 4 and can then,V loca-ted in` said' switch;In ad dition to thus supplying electric current' to" trolleyfwires 22',the trolley wircsnh, 23 ci Ithe switches are simultaneousl'ycato iffrornfeed wire 28 so that nocars could leave the flankingy switches beforecars (i7, 7,2 have entered `the samer, lltwill Seen that `when armature36 of Ciliitchanger will bei established, the currents-'of which How,thronglr electromagnets 32'. and 33 of circuitl changers "A1, A3:respectively, As

-thus the annature- 38ofsaid circitchang switch. The `car located inthelatter is thns unable to proceeduntil .theothen car has also entered theswtchywhereiipon electric cr'rent' supplied-' to the `switch ,trolleywires, so that both cars areable toproceed. In this way effective mea-nsare provided for preventing head-on collisionswithout4 the employmentofany signal wires betweentlie several track sections, the only wireused being the feed wire fcrthev trolley vwire or third raiLl Forthenrpfose of theannexed claims, `a',third rail iscbv-iously toibocdlisidered as an equivalent of the ltrolley wire forming-,an element ofsaid claims.

I claim:

elect-ricrailways, ast-rack composed of a fp A1. In an` automatic lcontrol system rality ofsingle track 'sections 'and intermefA diateswitches, conductively connected thereto, aV single trolley, c wiresection -for each single track section, Aa twmlr trolley WireI sectionfor eachjpswitch, thewires 'ofy each twinl trolley wif-ricsection-.being miitually connected andfins'iilated `fromwthe adjacentsingletrolley` wire' sections,'. a feeder, and means vprovided for eachswitch V'n ecting said feeder to a selectednumber of trolley wire-,sections, said controlling carcircuit' being `established intermediatethe switches by meansj of the connecting single s automa-tic controlsystem for electric railways, a track composed of a plurality ofsinglet-rack sections and intertrolle` wire sect-ions,

-m'ediafte' switches conductively connected "theretojasingle trolley.wiresection for each 'singletrack-section, a twin trolle 'wire sec-Vtion for each switch, thewires' oeach twin trolley wire section: beingmutuall 'connected and'insulated from the a jacent single trollo` wiresections, a feeder', and circuit. `cluaiigcrs located in proximity tothe switches. andi controlled by the'car-circuits for connecting saidfeeder to a selected number of trolley Wire sections, said circuitchanger-controlling' carcircuits being establishedintjermediate theswitches by means ofthe" resp Ftive connecting single trolley wirevsections, j,

4511i en ;antoniatic control system-for v electric railweys,` a trackcomposed of a pliirality of single track sections and interrswift-chesconductively connected thereto,'asingle trolley wire sect-ionl forsection` or :each-t switch, the `vsriresof 4each twin-` trolleyA v,wi-re1 sectionl mutually connected and insulated from e adjacentSiiie1eftr11ca wine sentient e feeder, and'` a circuit diafgerleceted1h, preximww each switchaiid .controlling cciinection betweentrolleywiresections adjacent to said switch lilll@Iv Wires. A. f,

fn an automatic c OIitijol system foij elc- @cauces-asing1eecasectienand a pair of Vsci itclies-'condoc tively' ,connectedi'to the, @lids tthereof, .e` Single trolley Wire for the single track section, ,a pairof mutually connected trolleywires for each switch, said last namedwires beinginsulat'ed from the single'trol1ey wire,a feed wire, acircuit .changer loca-cd proximity to` leach switch, and meanscontrolled bysald circuit changers for connecting the feed wire with the(feeders and the trolleyf-` wires of Said Aswitch 'and between thefeeder, `and the trolley wires of one switch and for simultaneouslydisconnecting the feed wire from the trolley wires of the other switch.

6. In an automatic control system for electric railways, a-single tracksection and a pair of switches conductively connected to the endsthereof, a single trolley wire for the single track section, a pair ofmutually connected trolley wires for each switch, said last named wiresbeing insulated from the single trolley wire, and means controlled a carfor supplying electric current to the trolley wires of one switch andfor simultaneously interrupting the suppl of electric -current to thetrolley wires o the other switch.' y

7. In an automatic control system for electric railways, a single tracksection and a pair of switches conductively connected to the endsthereof, a single trolley wire .for the single track section, a pair ofmutually connected trolley Wires for each switch, said last named wiresbeing insulated from the single trolley wire, means controlled by a carlocated in one switch for supplyin electric current to the trolley wlreso said switch and for simultaneously interrupting the supply of electriccurrent to the trolley Wires of the other switch, and means forinterrupting the supply of electric current to the twin trolley wires ofthe first named for supplying electric current to the trolley wires ofthe'single track section when the car passes from said first namedswitch to said single track section.

8. In an automatic control system for electric railways, a trackcomprising a pair -of sin le track sections, a "central switch interlneiate said singletrack sections and conductively connected thereto, apair of outer switches conductively connected to the outer ends of saidtrack sections, a single trolley wire section for each single tracksection, a

. twin trolley wire section for each of said switches, the Wires of eachtwin trolley wire section being mutually connected and insulated fromthe single trolley wire sections, an'd means controlled by a car locatedin the central switch for supplyingV electric current to the trollewires of said switch and for simultaneous y interrupting the supply ofelectric current 'to the trolley wires of the flanking switches.

9. In an automatic control system for electric railways, a trackcomprising a.pair of single track sections, a central switchintermediate said single track sections and conductively connectedthereto, a pair of outer switches conductively connected to the outerends of said track sections, a single trolley wire section for eachsingle track section, a

of single track sections, a central switch intermediate said singletrack sections` and conductively connected thereto, a pair of outerswitches conductively connected to the outer ends of said tracksections, a single ltrolley wire section for each lsingle track section,a twin trolley wire section for each of said switches2 the wires of eachtwin trolley wire section bein-g mutually con-' nected andinsulated-fromthe single trolley wire sections, a circuitchanger locatedin proximity to each switch, a feeder, and means controlled by thecircuit changers for connecting the feeder to the twin trolley wires ofthe central switch and for simulf taneously disconnecting the feederfrom the trolley wires of the flanking switches, said circuit changersbeing also adapted to connect the feeder with both ends ofthe trolleyWire of each single track` section.

BENJAMIN F. HUTCI-IES, JR. Witnesses:

ARTHUR ZUMPE, KATHERYNE KOCH.

